Examlex
Briefly explain how dark matter affects the expansion rate of the universe and the significance of the term critical density in the absence of any mysterious repulsive force.
Vasodilator
A substance that causes blood vessels to expand, increasing blood flow; used in the treatment of conditions like hypertension.
Vasopressor
A type of medication that causes blood vessels to narrow, raising blood pressure.
Phlebotomy
The act or practice of drawing blood from a vein, typically for diagnostic purposes.
Intravenous
Relating to the administration of drugs or fluids directly into a vein.
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